Across
Wistful writer’s riddle broadcast (7)
Medicinal plant back at rear of nursery (6)
I haven't cracked this one yet — but Fifteensquared have:
definition: a plant traditionally used in herbal medicine BET ON="back" e.g. 'back a racehorse', plus end letter ("rear") of [nurser]-Y
Relaxed popular class by a lake (8)
Joiner is topping worker (3)
I haven't cracked this one yet — but Fifteensquared have:
definition: 'and' can join words together e.g. in a list "topping"/'removing the head of': [H]-AND="worker"
It comes in banks in the main (3-3)
Flimsy material made of some rags (8)
Even innards of basset-hound for the Villa! (5)
I haven't cracked this one yet — but Fifteensquared have:
definition: Aston Villa are an English football team "Even" (i.e. not odd) letters taken from the insides of [b] A [s] S [e] T [h] O [u] N [d]
Having just one connection travelling via tunnel (9)
I haven't cracked this one yet — but Fifteensquared have:
definition: a term in chemistry for an atom that can form a single bond anagram/"travelling" of (via tunnel)*
Controlling influence of coach during time-off (9)
Superior meal, seconds not required (5)
I haven't cracked this one yet — but Fifteensquared have:
[s]-UPPER, with 's' for "seconds" (unit of time) removed
No farewell to learners. In no way (3,2,3)
I haven't cracked this one yet — but Fifteensquared have:
NO (from surface) + 'TA TA'=goodbye="farewell" + L and L (each L is for 'learner', so the two together are "learners")
Differs showing V-sign (6)
Furniture company no longer has active president (3)
I haven't cracked this one yet — but Fifteensquared have:
definition: US President Eisenhower was known as 'Ike' IKE-[A]="Furniture company" losing 'a' for "active"
Tops and just one t-shirt for starters (8)
I haven't cracked this one yet — but Fifteensquared have:
SINGLE="just one" + the starting letters T and S-[hirt]
Unsure a gangster is holding president (6)
Ruin half of Rhodes and Ilium (7)
Massive group rowing in outskirts of Wallasey (7)
I haven't cracked this one yet — but Fifteensquared have:
EIGHT=a crew of eight rowers="group rowing", inside outer letters of W-[allase]-Y
Down
Apparently singular snack for teams (7)
I haven't cracked this one yet — but Fifteensquared have:
definition: e.g. a football team might be an 'eleven' 'elevenses' are snacks, so 'elevens' might be read as a singular of this
Facade’s terribly posh for New Town, initially (9)
I haven't cracked this one yet — but Fifteensquared have:
anagram/"terribly" of (posh for)*, plus initial letters of N-[ew] T-[own]
Trip finding Venice on yacht, principally, taking a time (6)
Levi suffered somewhat, on reflection, gushing (8)
Jacket potato and red kale are their starters (5)
Dash over to meet a German to swap car? (5,2)
Jargon from flyer heard on the Big Breakfast? (6,7)
Whisky from wild archipelago without church (9)
I haven't cracked this one yet — but Fifteensquared have:
anagram/"wild" of (ar [c] hip [e] lago)*, not using the letters 'c' and 'e' for CE (Church of England, "church")
A capital girl – by Jove – ripping! (8)
I haven't cracked this one yet — but Fifteensquared have:
SARA=name for a "girl", plus anagram/"ripping" of (Jove)*
Touchy leading economist with reason (7)
Graceful and neat, oddly concealing limb (7)
I haven't cracked this one yet — but Fifteensquared have:
anagram/"oddly" of (neat)*, around LEG="limb"
Opposed to a bit from Keats, say (6)
I haven't cracked this one yet — but Fifteensquared have:
A VERSE [of poetry]="a bit from [the poet] Keats, say"
Arab picked up the vernacular (5)
Type letters or click words in the clue